Hi paul,
thanks for the info. very much appreciated. i'm probably being dumb but can
i clear a couple of things up please?
1. is the "almost certainly" referring to "contact really the problem" or
"something nastier lurking"!?
2. I take it then that the pump should NOT be operated with a direct
("unconventional") ground connection like mine seems to be. In which case i
should simply take the -ve terminal and connect it to a good chassis
ground.... right? This gets more mysterious, becuase the blue ground wire
that should be coming out of the harness at this point simply isn't. Still i
can easily improvise.
thanks for your time. I'm just being cautious seeing as fuel and half-assed
electrics don't mix too well!
cheers
Joe
-----Original Message-----
From: Paul Hunt [mailto:paul.hunt1@virgin.net]
Sent: Friday, May 19, 2000 11:15 AM
To: Garner, Joseph P.; MG list (E-mail)
Subject: Re: fuel pump misbehaviour
----- Original Message -----
From: Garner, Joseph P. <JPGarner@UCDavis.Edu>
To: MG list (E-mail) <mgs@autox.team.net>
Sent: Friday, May 19, 2000 8:00 AM
Subject: fuel pump misbehaviour
> 1. Is the gammy contact really the problem, or is there maybe something
> nastier lurking.
Almost certainly bu see 2.
> 2. Should the pump in a 79B be operating through some kind of direct
ground
> connection like this one appears to be?
Yes. All pumps should have a ground connection. It is quite possible for
it to be grounded without one, but only via several metal-to-metal fixings
(like the fuel pipe!) that weren't intended to provide an electrical path.
> 3. Electronic ignition? Can anyone out there give me a 101? Especially,
> could this be part of my mysterious crappy fuel economy and disabled
vacuum
> advance?
101? Room 101 in George Orwell's 1984 was where people were confronted with
their worst nightmares. Electronic ignition on its own is unlikely to be
giving poor economy unless you have serious mis-firing, more likely it is
due to poorly adusted carbs and/or timing, valves or some other cause. It
is not unusual to disable vacuum advance with operformance distributors, and
the OE electronic ignition was like this.
PaulH.
|